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What should be the maximum acceptance an...

What should be the maximum acceptance angle at the air–core interface of an optical fibre if `n_(1)` and `n_(2)` are the refractive indices of the core and the cladding, respectively

A

`sin ^(-1) (n_(2) // n_(1))`

B

`sin^(-1) sqrt(n_(1)^(2) - n_(2)^(2))`

C

`[ tan^(-1) . (n_(2))/( n_(1))]`

D

`[tan^(-1) .(n_(1))/(n_(2))]]`

Text Solution

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The correct Answer is:
B
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MOTION-RAY OPTICS-Exercise-3
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